EPJ Web of Conferences
Volume 73, 2014MENU 2013 – 13th International Conference Meson-Nucleon Physics and the Structure of the Nucleon
|Number of page(s)||4|
|Published online||09 June 2014|
A covariant model for the γ∗N → N∗(1520) reaction
1 International Institute of Physics, Federal University of Rio Grande do Norte, Av. Odilon Gomes de Lima 1722, Capim Macio, Natal-RN 59078-400, Brazil
2 CFTP, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
a e-mail: email@example.com
Published online: 9 June 2014
We apply the covariant spectator quark model to the study of the electromagnetic structure of the N∗(1520) state (Jp = 3-/2), an important resonance from the second resonance region in both spacelike and timelike regimes. The contributions from the valence quark effects are calculated for the γ∗N → N∗(1520) helicity amplitudes. The results are used to parametrize the meson cloud dominant at low Q2.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Initial download of the metrics may take a while.